Paper rewinder



Dec. 12, 1933. E E, BERRY 1 ,939,198

PAPER REWINDER Filed March 23, 1931 4 shets-shsagt 1 12, 1933. E. E. BERRY 1,939,198

PAPER REWINDER Filed March 23, 1931 4 Sheets-Sheer. 2

E. E. BERRY PAPER REWINDER Dec. 12, 1933.

Filed March 23, 1931' 4 Sheets-Sheet 3 641/ cf; Zezzg. %rr g5.

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4 Shgets-Sheet 4 Filed March 23, 1931 V5.47 DH (far! 6. fiery Patented Dec. 12, 1933 PAPER REWINDER Earl E. Berry, Beloit, Wis., assignor to Beloit Iron Works, Beloit, Wis., a corporation of Wiscon- Application March 23, 1931. Serial No. 524,439

20 Claims. (Cl. 242-66) This invention relates to a paper rewinder and more particularly to a paper rewinder provided with an attachment for discharging wound rolls of any size from winding position on the rewinder and replacing a fresh winder shaft in operative position.

In modern paper making practice, the parent reels of paper as formed on the paper machine are frequently feet or so in width. These reels of paper are then slit and rewound on winding machines, commonly called rewinders, into small or large diameter rolls, as required. In the usual form of rewinder, the paper is wound by surface contact with one or more driven 15 under drums on a plurality of cores of the proper length releasably secured on a common winder shaft. In order to remove the finished rolls from winding position, numerous attachments have heretofore been devised for moving the 2 rolls over the face of the forward drum onto a receiving platform or the like.

Frequently, however, the same rewinder is used to wind rolls of small diameter, say 9" to 18" diameter, as well as rolls of much larger diameter, and for this reason the roll ejecting attachment should be so constructed as to handle rolls of any usual size with equal case.

It is therefore an object of this invention to provide a roll ejecting mechanism for attachment to a rewinder capable of discharging rolls of any diameter in a simple and efficient manner.

It is a further important object of this invention to provide a roll ejecting attachment in conjunction with mechanism for automatically returning a fresh winder shaft to winding position.

Other and further important objects of this invention will be apparent from the disclosures in the specification and the accompanying drawings.

This invention (in a preferred form) is illustrated in the drawings and hereinafter more fully described.

On the drawings:

Figure 1 is an end elevational view of a rewinder provided with a roll ejecting mechanism embodying the features of my invention.

Figure 2 is a front side, broken elevational view of the same.

Figure 3 is an enlarged sectional view taken substantially along line III-III of Figure 2.

Figures 4 and 5 are views similar to Figure 3, illustrating the operation of the ejecting mechanism.

As shown on the drawings:

The reference numeral 1 indicates as a whole a supporting frame, comprising a pair of end members each having a base portion 2 and an upstanding portion 3 extending from said base portion. The end frame members are suitably rigidified by tie members including a rod 4 and 80 shafts or bars 5 that extend between the two end members and are rigidly secured thereto.

A pair of under drums 6 and 7 are suitably supported at their ends in brackets 8 and 9, respectively, supported upon the base members 2. The journals of said under drums 6 and '7 are mounted for rotation in bearing boxes 10 and 11, respectively. Said under drums 6 and 7 are both adapted to be driven from a suitable source of power, and for this purpose the shaft of said under drums may be extended as at 12 (Figure 2) and provided with a flexible coupling 13 for connection with a driven shaft 14.

The web of paper is wound, in the usual manner, upon a winding shaft 15 releasably held at its ends in bearing clamps 16. A slitting mechanism, indicated generally by the reference numeral 1'1 and including saw type slitters 18, is provided for slitting the web of paper into the desired widths of rolls. Since these and other features of the re- 30 winder as illustrated, except those hereafter specifically described, are all either standard construction or else form no part of the present invention, it is not believed necessary to describe them in greater detail.

My present invention comprises a roll ejecting mechanism, best shown in Figures 3 to 5 inclusive, and mechanism for returning a fresh winder shaft into operative winding position with respect to the under drums. Said roll ejecting mechanism includes a pair of stub shafts 19 secured to the inside of the base frame members 2 in alignment. An arm 20 is rotatably mounted upon each of the stub shafts 19 to extend rearwardly below the rear winder drum 6. Each of said arms 20 has an integrally formed upwardly extending portion 21 that is branched, as at 22, to provide a roll engaging arm 23 and a winder shaft engaging arm 24. Ratchet teeth 25 are provided along the rearwardly directed face of the arm portion 21 for engagement with a pinion 26 fixedly secured to a transversely extending shaft 27. Said shaft 27 is suitably journaled in the side members of the reel stand 1 and is provided at its rearwardly extended end with a suitable driving means (not shown) which may be either manual or power operated.

The roll ejecting arm portions 23 are provided at their ends with split bearing clamps 28 in which D0 are journaled the ends of a transversely extending roller 29. The shaft ejecting arms 24 extend forwardly and are provided with enlarged ends 30 having arcuate shaft engaging surfaces 31.

Said arms 20 are likewise provided with integrally formed, forwardly extending members 32 that terminate below the forward under drum '7. Each of said members 32 carries a spring pressed pawl or detent 33 rotatably mounted upon a pin 34. Each detent 33 has an offset forwardly extending portion 35 and a rearwardly extending portion 36. An adjustable stop member in the form of a pin or bolt 37 is threaded through a boss 38 formed on each of the members 32 for engagement with the upper face of the rearwardly extending portion 36 of each pawl 33. In order to fix the pin 37 in adjusted position, there is provided a lock nut 39 that may be threaded down against the upper face of the boss 38. A spring 40 is suitably positioned under compression between the boss 38 and the rear face of the offset portion 35 of the pawl 33.

The means previously referred to for returning a fresh winder shaft into winding position includes a pair of plungers 41 adapted to be actuated by operation of the arms 20 in cooperation with the pawls 33 and mechanism just described. Each of said plungers 41 is mounted for free vertical movement in a bracket 42 secured to a transversely extending channel beam 43 resting upon the base portion 2 of the rewinder frame. Said channel beam 43 is cut away at each end, as at 44 for a purpose later to appear and cooperates with arcuate shaped brackets 45 secured to said channel member 43 adjacent the ends thereof to form a pocket, or recess 46 for receiving the ends of a spare winder shaft 47. A roll receiving platform 48, suitably secured to the upper flanged edge of the channel member 43, bridges the gap between the forward under drum 7 and an inclined platform 49 supported from said bracket 45. When positioned in the pocket 46, the spare winder shaft 47 lies slightly below or flush with the upper surfaces of the bridge member 48 and platform 49, so as to permit a finished roll of paper 50 to be rolled over the forward under drum 7, bridge member 48 and platform 49.

Each of the plungers 41 is provided with an enlarged head 51 at its upper end that extends under the pocket 46 and is provided at its forward end with an arcuate-shaped shaft engaging portion 52.

Figure 4 illustrates the operation of my roll ejecting mechanism when the wound roll of paper is of relatively large diameter. Upon rotation of the shaft 27, the pinion gears 26 by engagement with the ratchet teeth 25 elevate the rear ends of the arms 20 until the roller 29 engages the surface of the wound roll 50. Continued movement of the arms 20 causes the roll 50 to be lifted out of its operating position in contact with the winder drums 6 and 7 and to be rolled over the surface of the forward under drum 7 onto the bridge member 48, over the spare winder shaft 47 in the pocket 46 and onto the inclined platform 49 to be delivered onto a receiving platform (not shown). As the arms 20 are elevated, the forwardly extending members 32, being integral therewith, are correspondingly lowered. During the lowering movement, the forward portions 35 of the pawls 33 come into engagement with the rear faces of the shanks of the plungers 41. Said rear faces are cut away as at 53 to permit the ends of the pawl portions 35 to slide therealong. The springs 40 permit the pawl portions 35 to be pressed backwardly as they travel along the surface of the plungers 41, but as soon as the pawl portions 35 have cleared the ends of said plungers 41, the springs 40 act to force said pawl portions outwardly to extend beneath the lower ends of said plungers 41. Consequently, when the arms 20 are again lowered into their normal position, the pawls 33 which are now held rigid by the stop members 37, bear against the lower ends of the plungers 41 and, on continued upward movement, lift the plungers into the position shown in dotted lines in Figure 4. The plunger heads 51 thereupon lift the winder shaft 47 out of the pocket 46 and the slight rearward and downward inclination of said heads 51, in connection with the curvature of the end portions 52, gives the winder shaft 47 suflicient impetus to roll rearwardly over the bridge member 48 and into the winding position between e two under drums 6 and '7. The spare winder shaft 47 is thus automatically placed in operative position as a sequence to the removal of the wound roll of paper from the rewinder. The proportions and arrangement of parts are such that when the arms 20 are finally brought into normal lowered position, as shown in Figure 3, the pawls 33 have disengaged themselves from the ends of the plungers 41 to permit said plungers to drop back by their own weight into normal lowered position. Another spare winder shaft may then be inserted in the pocket 46 provided for the purpose.

In Figure 5 there is shown the operation of the roll ejecting mechanism when handling rolls of relatively small diameter, 'say 18. inches or less. In this case, the roll is not of sufficient size to permit engagement of it by the roller 29 prior to the engagement of the winder shaft ends by the shaft engaging faces 31 of the forwardly extending arm portions 24. Said shaft engaging surfaces 31, accordingly, contact with the free portions of the winder shaft 15, so that upon continued elevation of the arms 20, the wound roll of paper is caused to roll up over the surface of the forward drum '7 in the manner above described and be delivered, onto a receiving platform. The operation of the winder shaft returning mechanism is the same as that previously described.

It is thus apparent that I have provided a roll ejecting mechanism and a mechanism for automatically returning a spare winder shaft coordinated therewith and that these mechanisms are so constructed as to function properly irrespective of the diameter of the wound rolls of paper on the rewinder. The operation of these mechanisms dispenses with a considerable amount of manual labor and also dispenses with overhead cranes or the like for handling the large rolls of paper produced on modern rewinders. It should be noted that the construction of the roll ejecting mechanism is relatively simple and rugged and little likely to get out of order. Furthermore, the mechanism can be readilyv attached to present constructions of rewinders without a great deal of alteration.

It should also be noted that the construction and operation of my roll ejecting mechanism is such that when a large diameter roll is to be ejected, the ejecting force is equally distributed throughout the length of the wound roll of paper and acts through the roll instead of being applied locally to the ends of the winder shaft. This is an extremely beneficial provision, since in the case of very wide machines, the large diameter rolls are of great weight and any force such as would be necessary to move these rolls would, if applied to the ends of the winder shaft only, result in a flexing or bending of the winder shaft and the consequent deflection of the shaft would be liable to cause the slitted rolls on the shaft to separate at the slits and thus do damage to the edges of the individual rolls along the side that the slit is closed up because of deflection of the shaft. It would be impractical to attempt to remedy this condition by using larger size diameter winder shafts with the larger rolls of paper, since this would necessitate carrying different sizes of winder shafts in stock in the paper mill and also diiferent sizes of shafts in the converting plant, besides making necessary alterations in converting machines that are now designed for handling only the standard size of cores that has heretofore been used in the winding of paper in the paper mill on narrower widths of rewinders. Since it has therefore been necessary to adhere to the same size winder shaft as was used on the narrower machines, the longer shafts for the wider, more modern machines, are. consequently very limber and the objectionable results just explained that occur when the ejecting pressure is applied locally at the ends of the winder shaft, are best avoided by applying the ejecting pressure uniformly throughout the length of the wound roll of paper.

On the other hand, when the wound rolls of paper are of relatively small diameter, say up to 15" or 18", it is entirely feasible to push upon the ends of the shaft in order to eject the rolls since they are not of sufficient weight to bring about any such damage as has been mentioned in the case of the large diameter rolls. Furthermore, this provision of alternatively acting ejecting means to take care of rolls of different diameters, tends to simplify the construction and operation of the ejecting mechanism, since the ejecting mechanism of my invention need not act through such a long path as would be necessary were but a single ejectingdevice acting through the wound roll of paper employed.

I am aware that many changes may be made and numerous details of construction may be varied through a wide range without departing from the principles of this invention. and I, therefore, do not purpose limiting the patent granted hereon otherwise than necessitated by the prior art.

I claim as my invention:

1. In a paper winding apparatus, a pair of driven under drums, a winder shaft cooperating with said under drums to receive and wind a paper web into a roll, ejecting means engaging the shaft if the roll is less than a predetermined size and engaging the roll itself if more than a predetermined size to remove the roll and shaft from cooperating position.

2. In a paper winding apparatus, a pair of driven under drums, a winder shaft cooperating with said under drums to receive and wind a paper web into a roll, and means for ejecting said shaft or roll so formed from cooperating position including pivotally mounted rigidly connected members one of which engages said shaft if the roll is less than a predetermined size, while the other member engages the roll if the roll is more than a predetermined size.

3. In a paper winding apparatus, a pair of driven under drums, a winder shaft cooperating with said under drums to receive and wind a paper web into a roll, means for ejecting the shaft or roll so formed from cooperating position including a member movable into engagement with said shaft if said roll is less than predetermined size and another member movable into engagement with said roll itself if more than a predetermined size and members for supporting a spare winder shaft, said latter members being automatically actuated by the movement of the ejecting members to move said spare winder shaft into cooperative position with said under drums.

4. In a paper winding apparatus, a pair of driven under drums, a winder shaft cooperating with said under drums to receive and wind a paper web into a roll, means for ejecting the shaft or roll so formed from cooperating position including a pivotally mounted member movable into engagement with said shaft if the roll is less than a predetermined size and another member rigidly connected with said first member movable into engagement with the roll itself if said roll is greater than a predetermined size, and members for supporting a spare winder shaft, said winder shaft supporting members being automatically actuated by the movement of the ejecting members to move said spare winder shaft into cooperative position with said under drums.

5. In a paper winding apparatus, a supporting frame, a pair of driven under drums, a winder shaft cooperatively associated with said under drums for receiving and winding a web of paper into a roll, a spare winder shaft, a plurality of vertically movable members cooperating with said frame to support said spare winder shaft and means for ejecting the first-mentioned winder shaft from cooperative position, said means also actuating said movable supporting members to transfer said spare winder shaft into cooperative position with said under drums.

6. In a paper winding apparatus, driven under drums, a winding shaft for cooperation therewith to wind a web of paper into a roll, a spare winding shaft, movable supports for said spare shaft, pivotally mounted arms having at their upper .ends a transversely extending bar and means for swinging said arms to cause said bar to contact said roll to discharge said roll from its cooperating position with said under drums and to actuate the movable supports for transferring the spare winder shaft into cooperative relation with said under drums.

7. In a paper winding apparatus, including driven winding drums, a winder shaft for receiving a web of paper to be wound thereon into a roll by contact with said winder drums, and means for ejecting the roll from cooperating position, a spare winding shaft, vertically movable supports for said spare shaft, means actuated by said ejecting means to raise said movable supports for transferring the spare winding shaft into cooperative relation with said under drums.

8. In combination with a paper winding apparatus including a pair of driven under drums, a winding shaft for cooperation therewith to wind a web of paper into a roll, ejecting means engaging said roll if more than a predetermined size and engaging said winder shaft if said roll is less than a predetermined size to transfer the roll from cooperative position with the under drums, a spare winder shaft, movable supports for said spare winder shaft, means integral with and operated by said ejecting means to raise said spare winder shaft supports for transferring said shaft into cooperating position with said under drums.

9. In a paper .winding apparatus including a frame for supporting said apparatus-a pair of driven under drums, a winding shaft for cooperation with said under drums to wind a web of paper into a roll, ejecting means engaging the winder shaft if the roll is less than a predetermined size, additional ejecting means integral with said first ejecting means to engage the roll if it is more than a predetermined size, a notched receptacle in said frame, a spare winder shaft in said receptacle, vertically moving supports engaging said spare winder shaft, means integral with said ejecting means to raise said vertical supports for transferring the spare winder shaft into cooperative relation with the under drums.

10. In a paper winding apparatus, including a supporting frame, a pair of driven under drums. a winding shaft for cooperation with said drums to wind a web of paper into a roll, ejecting means to remove said roll from said apparatus, a notched receptacle in said supporting frame, a spare winder shaft in said receptacle, vertically adjustable supports for said spare winder shaft, spring-actuated trip means integral with said ejecting means to raise said spare winder shaft supports for transferring said shaft into cooperation with said under drums.

11. In a paper winding apparatus, driven under drums, web receiving means rotated by contact with said drums to wind a web of paper into a roll, arms having roll engaging p rtions and portions for engaging said web receiving means, means below said under drums on which the lower ends of said arms are pivotally mounted and means for swinging said arms into engagement with said roll if the roll is more than a predetermined size or with said web receiving means if said roll is less than predetermined size to discharge said roll from said drums.

12. In a paper winding apparatus, driven surface winding drums, a winder shaft for receiving a web of paper to be wound thereon into a roll by contact with said under drums, arms pivotally mounted at their lower ends adjacent the ends of and below said under drums, shaft and roll engaging portions formed on the upper ends of said arms for engagement with either said shaft or roll depending upon the size of said roll and means for swinging said arms to eject a roll from winding position.

13. In a paper winding apparatus, driven winding drums, a winder shaft for receiving a web of paper to-be wound thereon into a roll by contact with said under drums, arms pivotally mounted at their lower ends adjacent the ends of and below said under drums, shaft and roll engaging portions formed on the upper ends of said arms for engagement with either said shaft or roll depending upon the size of said roll, power operated means for swinging said arms to eject a roll from winding position and means actuated by operation of said arms to subsequently move a fresh winder shaft into winding position.

14. In a paper winding apparatus, driven under drums, a winding shaft for cooperation therewith to wind a web of paper into a roll, pivotally mounted arms having curved forwardly presented surfaces and means for swinging said arms to bring said surfaces into slidable contact with the ends of said shaft when the roll thereon is less than a predetermined size and to discharge said shaft from its cooperating position with said under drums.

15. In a paper winding apparatus, driven under drums, a frame for supporting said drums, a winder shaft rotated by said under drums to wind a web of paper thereon into a roll, stubshafts supported by said frame below said drums. arms pivotally mounted at their lower ends on said stub shafts and having at their upward forwardly extending ends portions for engaging either said roll or shaft depending upon the size of the roll and means for swinging said arms to discharge said shaft and roll.

16. In a paper winding apparatus, driven under drums, a frame for supporting said drums, a winder shaft rotated by said under drums to wind a web of paper thereon into a roll, stub shafts supported by said frame below said drums, arms pivotally mounted at their lower ends on said stub shafts and having at their upward forwardly extending ends portions for engaging either said roll or shaft depending upon the size of the roll, means for swinging said arms to discharge said shaft and roll, and vertically movable members normally supporting a fresh winder shaft actuated by movement of said arms to subsequently move a fresh winder shaft into winding position on said drums.

17. In a paper winding apparatus, driven under drums, a frame for supporting said drums, a winder shaft rotated by said under drums to wind a web of paper thereon into a roll, stub shafts supported by said frame below said dmms, arms pivotally mounted at their lower ends on said stub shafts and having at their upward forwardly extending ends portions for engaging either said roll or shaft depending upon the size of the roll, means for swinging said arms to discharge said shaft and roll, vertically movable members freely supported from said frame, a discharge platform cooperating with said members to form a pocket, a fresh winder shaft in said pocket and spring actuated trip means carried by said arms to move said members upwardly to lift said fresh winder shaft out of said pocket and cause the same to roll over said platform into web receiving position.

18. In a paper winding apparatus, a supporting frame, a pair of driven under drums, a winder shaft cooperatively associated with said under drums for receiving and winding a web of paper into a roll, a spare winder shaft, means including trip actuated members supporting said spare winder shaft and means for ejecting the firstmentioned winder shaft from cooperative position, said ejecting means automatically operating said trip actuated supporting members to elevate the spare winder shaft and cause said shaft to roll over one of ;.,id drums into cooperative position with both cf said. under drums.

19. In a paper windir: pparatus, a supporting frame, a pair of driven under drums supported thereon, a winder shaft supported and rotated by said under drums for receiving and winding a web of paper into a roll, arms pivoted from said frame having a portion for engaging said winder shaft and another portion for engaging said roll depending upon the size of the roll,-and means for actuating said arms to eject a roll from cooperative position with said under 20. In a paper winding apparatus, a supporting frame, a pair of driven under drums supported thereon, a winder shaft supported and rotated by said under drums for receiving and winding a web of paper into a roll, arms pivoted from said frame and having spaced roll ejecting members, one of said members being adapted to be moved into contact with the roll if said roll winder shaft, a movable support for the spare winder shaft, and members carried by said pivoted arms for actuating said spare winder shaft support to transfer said shaft into cooperative position with said under drums.

EARL E. BERRY. 

